QtIFW

Order function like declaration order. Add documentation.

Change-Id: Idb939a43adc16289e83b763d2d32882b186881aa
Reviewed-on: http://codereview.qt.nokia.com/3104
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Tim Jenssen <tim.jenssen@nokia.com>
Reviewed-by: Niels Weber <niels.2.weber@nokia.com>